Angle ABC = 130
Angle ABC = Angle ADC = 130 (Opposite angles are equal)
Angle DAB = 180 - 130 = 50 (consecutive interior angles)

I HOPE IT IS HELPFUL:D

6 0

3 years ago

Read 2 more answers

HELP QUICK! You must find all intervals<br> where f(x) is negative. <br> f(x)=2(x+3)(x-7)

beks73 [17]

Answer:

any # where -2<=x<7

Step-by-step explanation:

(x-7) would be negative and (x+3) positive, resulting in f(x) being negative.

4 0

2 years ago

A triangle has side lengths of 39, 80, and<br> 87. Is this triangle a right triangle?

iren2701 [21]

Answer:

Step-by-step explanation:

39²=1521

80²=6400

39²+80²=1521+6400=7921

87²=7569

7921≠7569

so it is not aright angled triangle.

4 0

3 years ago

Read 2 more answers